App Won't Start On Bootup When Using Cron@johnsmith, whether it opens a window itself or not is irrelevant; the command makes use of / requires a working GTK/X11/GUI session to operate. The second line of the man page description reads "The application is started with proper startup notification on a default display, unless specified otherwise". Here display refers to an X11 session identified by the DISPLAY environment variable, which cron jobs do not have, nor is there any guarantee that there even is an X11 server running on the system.

can i hardware raid 0 windows 10 alongside ubuntu?Your question is too unclear to be answerable in a q/a format, but it sounds like you have what is called a fake raid, and want to dual boot windows and ubuntu. If you are asking if this is possible, the answer is yes.